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https://hdl.handle.net/2440/39201
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Type: | Journal article |
Title: | Rotational Energy Distributions of Benzene Liberated from Aqueous Liquid Microjets: A Comparison between Evaporation and Infrared Desorption |
Author: | Maselli, O. Gascooke, J. Kobelt, S. Metha, G. Buntine, M. |
Citation: | Australian Journal of Chemistry: an international journal for chemical science, 2006; 59(2):104-108 |
Publisher: | C S I R O Publishing |
Issue Date: | 2006 |
ISSN: | 0004-9425 1445-0038 |
Statement of Responsibility: | Olivia J. Maselli, Jason R. Gascooke, Sarah L. Kobelt, Gregory F. Metha and Mark A. Buntine |
Abstract: | We have measured the rotational energy distribution of benzene molecules both evaporated and desorbed by an IR laser from a liquid microjet. Analysis of the 6₀¹ vibronic band of benzene has shown that the benzene molecules evaporating from the liquid microjet surface have a rotational temperature of 157 ± 7 K. In contrast, the rotational temperature of benzene molecules desorbed from the liquid microjet by a 1.9 μm laser pulse is 82 ± 5 K. However, in both cases careful inspection of the spectral profiles shows that the experimental rotational distributions are non-Boltzmann, displaying an underpopulation of high rotational states and a relative overpopulation of the low rotational states. The non-equilibrium evaporation and desorption spectral profiles are consistent with a model that involves transfer of internal energy into translation upon liberation from the condensed phase. |
Description: | Copyright © 2006 CSIRO |
DOI: | 10.1071/CH05319 |
Published version: | http://www.publish.csiro.au/nid/51/paper/CH05319.htm |
Appears in Collections: | Aurora harvest Chemistry publications Environment Institute publications |
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